mmc: wbsd: Silence compiler warning

The commit "mmc: wbsd: Move away from using deprecated APIs" introduced
a compiler warning, let's silence it.

Cc: Pierre Ossman <pierre@ossman.eu>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
diff --git a/drivers/mmc/host/wbsd.c b/drivers/mmc/host/wbsd.c
index 024c824..1defd5e 100644
--- a/drivers/mmc/host/wbsd.c
+++ b/drivers/mmc/host/wbsd.c
@@ -1859,7 +1859,6 @@
 static int wbsd_pnp_suspend(struct pnp_dev *pnp_dev, pm_message_t state)
 {
 	struct mmc_host *mmc = dev_get_drvdata(&pnp_dev->dev);
-	struct wbsd_host *host;
 
 	if (mmc == NULL)
 		return 0;